Dennis Burkley is one of those faces and voices that was familiar to you and that you would recognize in an instant, but no one probably ever knew his name. Burkley was in so many movies and television shows and generally played a guy from the south with a beard. In his later years he was most famous for being on My Name Is Earl and starring as Principal Moss on King Of The Hill. The actor passed away in his sleep on Sunday. He was 67.
Source:
http://www.crazydaysandnights.net/2013/07/dennis-burkley-has-died.html